Image:1l8bmonomer.pdb

Just one monomer of the Messenger RNA 5' Cap-binding Protein (eIF4E) bound to 7-methylGpppG. The original file 1l8b had two in the unit cell of the crystal structure, in contrast to the biological unit.

see 1l8b's entry at the PDB. Niedzwiecka, A., Marcotrigiano, J.,  Stepinski, J.,  Jankowska-Anyszka, M.,  Wyslouch-Cieszynska, A.,  Dadlez, M.,  Gingras, A.C.,  Mak, P.,  Darzynkiewicz, E.,  Sonenberg, N.,  Burley, S.K.,  Stolarski, R.  (2002) Biophysical studies of eIF4E cap-binding protein: recognition of mRNA 5' cap structure and synthetic fragments of eIF4G and 4E-BP1 proteins. J.Mol.Biol. 319: 615-635

From the PDB "Data files contained in the PDB archive (ftp://ftp.wwpdb.org) are free of all copyright restrictions and made fully and freely available for both non-commercial and commercial use. "